WO2014187322A1 - Procédé d'identification de faisceau, et dispositif et système correspondants dans un système de communications mimo à formation de faisceau - Google Patents

Procédé d'identification de faisceau, et dispositif et système correspondants dans un système de communications mimo à formation de faisceau Download PDF

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Publication number
WO2014187322A1
WO2014187322A1 PCT/CN2014/078040 CN2014078040W WO2014187322A1 WO 2014187322 A1 WO2014187322 A1 WO 2014187322A1 CN 2014078040 W CN2014078040 W CN 2014078040W WO 2014187322 A1 WO2014187322 A1 WO 2014187322A1
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WO
WIPO (PCT)
Prior art keywords
base station
terminal
time domain
beam training
frequency domain
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PCT/CN2014/078040
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English (en)
Chinese (zh)
Inventor
仲丽媛
郭森宝
郁光辉
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to US15/106,453 priority Critical patent/US9906284B2/en
Publication of WO2014187322A1 publication Critical patent/WO2014187322A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource

Definitions

  • the present invention relates to a MIMO (Multi-Input Multiple-Output) beamforming communication technology, and more particularly to a beam identification method, related equipment and system in a MIMO beamforming communication system.
  • MIMO Multi-Input Multiple-Output
  • the transmitting end can concentrate the transmitting energy in a certain direction, while the energy in other directions is small or not, that is, each beam has its own directivity, as shown in Fig. 1.
  • Each beam can only cover terminals in a certain direction, and the transmitting end, that is, the base station needs to transmit multiple beams to complete the full coverage.
  • the base station does not know where the terminal is located, and does not know the channel state information between the base station and the terminal, so the base station does not know which beam can be used to cover the terminal; similarly, the terminal also It is not known in which direction the signal is transmitted to cover the base station.
  • the base station for the transmitting end Therefore, the receiving end, that is, the terminal, measures and feeds back the downlink channel state information or weight.
  • the transmitting end needs to measure and feed back the uplink channel state information or weight, thereby ensuring that the base station can
  • the downlink traffic is transmitted by the optimal beam, and the terminal can also use the optimal beam to transmit the uplink service.
  • the base station when communicating with a high carrier frequency, the base station cannot cover the terminal with the optimal beam before obtaining the weight of the beamforming, so that the terminal cannot measure using the reference signal transmitted by the base station. Or even if the base station covers the terminal, the terminal cannot reach the same coverage as the base station, so the base station cannot know the content of the feedback from the terminal, and thus the base station cannot perform the selection of the weight of the beamforming and the normal communication.
  • embodiments of the present invention provide a beam identification method, a related device, and a system in a MIMO beamforming communication system.
  • An embodiment of the present invention provides a base station side beam identification method in a MIMO beamforming communication system, including:
  • the base station sends multiple beam training signals to the terminal; each beam training signal corresponds to one beam, and each beam covers a different direction;
  • the base station determines a beam for transmitting data information according to the indication information of the selected beam fed back by the terminal.
  • the base station sends multiple beam training signals, including:
  • the base station transmits multiple beam training signals by using at least one of a time division mode, a frequency division mode, a time domain difference mode, and a frequency domain difference mode;
  • the transmitting the plurality of beam training signals in a time division manner is:
  • the base station sends multiple beam training signals in different time domain locations; each beam corresponds to one time domain location; And transmitting the plurality of beam training signals by using a frequency division method, which is:
  • the base station transmits multiple beam training signals in different frequency domain locations; each beam corresponds to one frequency domain location;
  • the transmitting the plurality of beam training signals in the time domain differential manner is:
  • the base station transmits multiple beam training signals in different time domain intervals; each beam corresponds to one time domain interval;
  • the transmitting the multiple beam training signals by using the frequency domain differential method is:
  • the base station transmits multiple beam training signals in different frequency domain intervals; each beam corresponds to one frequency domain interval.
  • the base station sends multiple beam training signals in different time domain intervals, including:
  • the base station periodically transmits multiple beam training signals; each beam training signal corresponds to one transmission period; or
  • the beam training signal corresponding to each beam is transmitted twice in one training period, and the time interval between two transmitted beam training signals is different; the time domain intervals corresponding to different beams are different.
  • the time domain interval between different beams is not equal to the training period and the time i or interval corresponding to any beam.
  • the number of beams corresponding to the beam training signal sent by the base station is less than or equal to the maximum number of beams supported by the base station.
  • the indication information of the selected beam is a beam index corresponding to the selected beam, or information indicating a beam index corresponding to the selected beam.
  • the information that can identify the beam index corresponding to the selected beam includes: at least one of a time domain location index, a frequency domain location index, a time domain interval index, and a frequency domain interval index.
  • the indication information of the selected beam is the information of the beam index corresponding to the selected beam
  • the indication information of the selected beam fed back by the terminal, Determining the beam used to transmit data information, including:
  • the base station determines a beam for transmitting data information according to the stored information of the beam index corresponding to the selected beam and the correspondence between the beam indexes.
  • the embodiment of the present invention further provides a terminal side beam identification method in a MIMO beamforming communication system, including:
  • the terminal detects a beam training signal
  • the selected beam is determined, and the indication information of the selected beam is fed back to the base station.
  • the embodiment of the invention further provides a beam identification method in a MIMO beamforming communication system, comprising:
  • the base station sends multiple beam training signals to the terminal; each beam training signal corresponds to one beam, and each beam covers a different direction;
  • the terminal detects the beam training signal; determines the selected beam according to the detection result of the beam training signal, and feeds back the indication information of the selected beam to the base station;
  • the base station determines a beam for transmitting data information according to the indication information of the selected beam fed back by the terminal.
  • the embodiment of the present invention further provides a base station in a MIMO beamforming communication system, including: a first sending unit, a receiving unit, and a first determining unit;
  • a first sending unit configured to send multiple beam training signals to the terminal; each beam training signal corresponds to one beam, and each beam covers a different direction;
  • the first receiving unit is configured to receive the indication information of the selected beam fed back by the terminal; the first determining unit is configured to determine, according to the feedback indication information of the selected beam, a beam for transmitting the data information.
  • the sending the multiple beam training signals includes:
  • time division method Using time division method, frequency division method, time domain difference method, and frequency domain difference method Less than one type of transmitting multiple beam training signals;
  • the transmitting the plurality of beam training signals in a time division manner is:
  • each beam corresponds to a time domain location
  • each beam corresponds to one frequency domain location
  • the transmitting the plurality of beam training signals in the time domain differential manner is:
  • each beam corresponds to one time domain interval
  • the transmitting the multiple beam training signals by using the frequency domain differential method is:
  • Multiple beam training signals are transmitted in different frequency domain intervals; each beam corresponds to one frequency domain interval.
  • the number of beams corresponding to the transmitted beam training signal is less than or equal to the maximum number of beams supported by the base station.
  • the embodiment of the present invention further provides a terminal in a MIMO beamforming communication system, including: a detecting unit, a second determining unit, and a second sending unit;
  • a detecting unit configured to detect a beam training signal
  • a second determining unit configured to determine the selected beam according to the detection result of the beam training signal
  • the second sending unit is configured to feed back indication information of the selected beam to the base station.
  • the embodiment of the present invention further provides a beam identification system in a MIMO beamforming communication system, including a base station and a terminal;
  • the base station is configured to send multiple beam training signals to the terminal; each beam training signal corresponds to one beam, each beam covers a different direction; and the selected beam finger according to the terminal feedback Demonstrating information to determine a beam for transmitting data information;
  • the terminal is configured to detect the beam training signal; determine the selected beam according to the detection result of the beam training signal, and feed back the indication information of the selected beam to the base station.
  • the embodiment of the present invention further provides a computer storage medium, the computer storage medium comprising a set of instructions, when executing the instruction, causing at least one processor to perform the base station side beam identification method in the MIMO beamforming communication system Or performing the terminal side beam identification method in the MIMO beamforming communication system described above, or performing the beam identification method in the MIMO beamforming communication system described above.
  • the base station sends multiple beam training signals to the terminal; each beam training signal corresponds to one beam, and each beam covers different directions; Detecting the beam training signal; determining the selected beam according to the detection result of the beam training signal, and feeding back the indication information of the selected beam to the base station; the base station determining the beam for transmitting the data information according to the indication information of the selected beam fed back by the terminal, In this way, the optimal beam for transmitting information can be effectively identified, thereby further completing the beam training process, so that the base station can obtain the optimal beam weight of the terminal, and can use the optimal beam to transmit data to the terminal.
  • 1 is a schematic diagram of a beam transmitted by a base station
  • FIG. 2 is a schematic flow chart of a base station side beam identification method in a MIMO beamforming communication system according to an embodiment of the present invention
  • FIG. 3 is a terminal side beam identification method in a MIMO beamforming communication system according to an embodiment of the present invention. Schematic diagram of the process;
  • FIG. 4 is a schematic flow chart of a beam identification method in a MIMO beamforming communication system according to an embodiment of the present invention
  • FIG. 5(a) is a schematic diagram of a time-continuous training time domain unit in a beam identification method in a time division manner according to an embodiment of the present invention
  • FIG. 5(b) is a schematic diagram of a training time domain unit that is discontinuous in time in a beam identification method in a time division manner according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of a training time domain unit in a beam identification method in a time domain differential mode according to Embodiment 2 of the present invention.
  • FIG. 7 is a schematic diagram of a training time domain unit in a beam identification method in a three time domain differential mode according to an embodiment of the present invention.
  • FIG. 8(a) is a schematic diagram of a continuous frequency domain unit in a frequency domain in a beam identification method in a four-frequency domain manner according to an embodiment of the present invention
  • FIG. 8(b) is a schematic diagram of a continuous frequency domain unit in a frequency domain in a beam identification method in a four-frequency domain manner according to an embodiment of the present invention
  • FIG. 9 is a schematic diagram of a beam training unit in a beam identification method in a five-frequency domain differential mode according to an embodiment of the present invention.
  • FIG. 11 is a schematic diagram of a beam training unit in a beam identification method according to a seven-frequency division + time-domain differential method according to an embodiment of the present invention
  • FIG. 12 is a schematic structural diagram of a base station in a MIMO beamforming communication system according to an embodiment of the present invention
  • FIG. 13 is a schematic structural diagram of a terminal in a MIMO beamforming communication system according to an embodiment of the present invention
  • FIG. 14 is a MIMO beamforming communication according to an embodiment of the present invention
  • the base station sends a plurality of beam training signals to the terminal; each beam training signal corresponds to one beam, each beam covers a different direction; the terminal detects the beam training signal; and the detection result according to the beam training signal Determining the selected beam and feeding back the indication information of the selected beam to the base station; the base station determines the beam for transmitting the data information according to the indication information of the selected beam fed back by the terminal.
  • a base station side beam identification method in a MIMO beamforming communication system includes the following steps:
  • Step 201 The base station sends multiple beam training signals to the terminal; each beam training signal corresponds to one beam, and each beam covers a different direction;
  • the beam training signal refers to: a signal carrying a beam, and may also have other names, such as: a beam test signal, etc., as long as the signal that achieves the same purpose as the beam training signal in the present application is within the scope of the protection idea of the patent.
  • the base station sends multiple beam training signals, which specifically includes:
  • the base station transmits multiple beam training signals by using at least one of a time division mode, a frequency division mode, a time domain difference mode, and a frequency domain difference mode;
  • the base station transmits multiple beam training signals in different time domain locations; each beam corresponds to a time domain location;
  • the base station transmits multiple beam training signals in different frequency domain locations; each beam corresponds to one frequency domain location;
  • the base station transmits multiple beam training signals in different time domain intervals; each beam corresponds to one Time domain interval
  • the base station transmits multiple beam training signals in different frequency domain intervals; each beam corresponds to one frequency domain interval.
  • the base station sends multiple beam training signals in different time domain intervals, which specifically includes:
  • the base station periodically transmits multiple beam training signals; each beam training signal corresponds to one transmission period; or
  • the beam training signal corresponding to each beam is transmitted twice in one training period, and the time interval between two transmitted beam training signals is different; the time domain intervals corresponding to different beams are different.
  • the time domain interval between different beams is not equal to the training period and the time domain interval corresponding to any beam.
  • the number of beams corresponding to the beam training signal sent by the base station is less than or equal to the maximum number of beams supported by the base station; correspondingly, the number of time domain positions used for transmitting the beam training signal is less than or equal to the maximum number of beams supported by the base station;
  • the number of frequency domain positions used for transmitting the beam training signal is less than or equal to the maximum number of beams supported by the base station;
  • the number of time domain intervals used for transmitting the beam training signal is less than or equal to the maximum number of beams supported by the base station;
  • the number of frequency domain intervals of the transmit beam training signal is less than or equal to the maximum number of beams supported by the base station.
  • the base station transmits the beam training signal.
  • Step 202 The base station determines, according to the indication information of the selected beam fed back by the terminal, a beam for transmitting data information.
  • the indication information of the selected beam may be: a beam index corresponding to the selected beam or information that can identify a beam index corresponding to the selected beam; wherein, the information that can identify the beam index corresponding to the selected beam includes : Time Domain Location Index, Frequency Domain Location Index, Time At least one of a domain interval index and a frequency domain interval index.
  • the information indicating the beam index corresponding to the selected beam is a time domain location index; when the base station transmits multiple beam training signals by using the frequency division method, The information indicating the beam index corresponding to the selected beam is the frequency domain location index; when the base station uses the time domain differential manner to send multiple beam training signals, the information indicating the beam index corresponding to the selected beam is the time domain interval index; When the plurality of beam training signals are transmitted in the frequency domain differential manner, the information indicating the beam index corresponding to the selected beam is the frequency domain interval index; when the base station uses the time division method and the frequency division method to transmit multiple beam training signals, The information identifying the beam index corresponding to the selected beam is a time domain location index and a frequency domain location index, and so on.
  • the determining the beam for transmitting the data information according to the indication information of the selected beam that is fed back by the terminal includes:
  • the base station determines a beam for transmitting data information according to the stored information of the beam index corresponding to the selected beam and the correspondence between the beam indexes.
  • the selected beam may be a beam with the best receiving performance, etc.
  • which beam is the beam with the best receiving performance
  • the specific processing process for determining which beam is the beam with the best receiving performance is the field. The technical personnel are accustomed to technical means and will not be described again.
  • the terminal side beam identification method in the MIMO beamforming communication system includes the following steps:
  • Step 301 The terminal detects a beam training signal.
  • Step 302 Determine the selected beam according to the detection result of the beam training signal, and feed back the indication information of the selected beam to the base station.
  • the beam training signal refers to: a signal carrying a beam, and may also have other names, such as: a beam test signal, etc., as long as the signal with the same purpose as the beam training signal in the present application is achieved. Both are within the scope of this patent protection.
  • the terminal has previously known which method is used to determine the selected beam.
  • the indication information of the selected beam may be: a beam index corresponding to the selected beam or information that can identify a beam index corresponding to the selected beam; where the information indicating the beam index corresponding to the selected beam includes: At least one of a domain location index, a frequency domain location index, a time domain interval index, and a frequency domain interval index.
  • the selected beam may be a beam with the best receiving performance, etc.
  • which beam is the beam with the best receiving performance
  • the specific processing process for determining which beam is the beam with the best receiving performance is the field. The technical personnel are accustomed to technical means and will not be described again.
  • a beam identification method in a MIMO beamforming communication system includes the following steps:
  • Step 401 The base station sends multiple beam training signals to the terminal.
  • Each beam training signal corresponds to one beam, and each beam covers a different direction.
  • the beam training signal refers to: a signal carrying a beam, and may also have other names, such as a beam test signal, etc., as long as the signal that achieves the same purpose as the beam training signal in the present application is within the scope of the patent protection.
  • the base station sends multiple beam training signals, which specifically includes:
  • the base station transmits multiple beam training signals by using at least one of a time division mode, a frequency division mode, a time domain difference mode, and a frequency domain difference mode;
  • the base station transmits multiple beam training signals in different time domain locations; each beam corresponds to a time domain location;
  • the base station transmits multiple beam training signals in different frequency domain locations; each beam corresponds to one Frequency domain location
  • the base station transmits multiple beam training signals in different time domain intervals; each beam corresponds to one time domain interval;
  • the base station transmits multiple beam training signals in different frequency domain intervals; each beam corresponds to one frequency domain interval.
  • the base station sends multiple beam training signals in different time domain intervals, which specifically includes:
  • the base station periodically transmits multiple beam training signals; each beam training signal corresponds to one transmission period; or
  • the beam training signal corresponding to each beam is transmitted twice in one training period, and the time interval between two transmitted beam training signals is different; the time domain intervals corresponding to different beams are different.
  • the time domain interval between different beams is not equal to the training period and the time domain interval corresponding to any beam, so that the terminal's false detection can be effectively avoided.
  • the number of beams corresponding to the beam training signal sent by the base station is less than or equal to the maximum number of beams supported by the base station; correspondingly, the number of time domain positions used for transmitting the beam training signal is less than or equal to the maximum number of beams supported by the base station;
  • the number of frequency domain positions used for transmitting the beam training signal is less than or equal to the maximum number of beams supported by the base station;
  • the number of time domain intervals used for transmitting the beam training signal is less than or equal to the maximum number of beams supported by the base station;
  • the number of frequency domain intervals of the transmit beam training signal is less than or equal to the maximum number of beams supported by the base station.
  • the base station transmits the beam training signal.
  • Step 402 The terminal detects the beam training signal; determines the selected beam according to the detection result of the beam training signal, and feeds back the indication information of the selected beam to the base station;
  • the terminal has previously learned which way the base station transmits the beam training signal, and then knows which method should be used to determine the selected beam.
  • the indication information of the selected beam may be: a beam index corresponding to the selected beam or information that can identify a beam index corresponding to the selected beam; where the information indicating the beam index corresponding to the selected beam includes: At least one of a domain location index, a frequency domain location index, a time domain interval index, and a frequency domain interval index.
  • the selected beam may be a beam with the best receiving performance, etc.
  • which beam is the beam with the best receiving performance
  • the specific processing process for determining which beam is the beam with the best receiving performance is the field. The technical personnel are accustomed to technical means and will not be described again.
  • Step 403 The base station determines, according to the indication information of the selected beam fed back by the terminal, a beam for transmitting data information.
  • the base station determines, according to the indication information of the selected beam that is fed back by the terminal, the beam for transmitting the data information, specifically including :
  • the base station determines a beam for transmitting data information according to the stored information of the beam index corresponding to the selected beam and the correspondence between the beam indexes.
  • each beam is periodically transmitted, and the transmission periods of the N beams are the same, and N training time domain units are divided in each transmission period, N
  • the adjacent training time domain units can be continuous in time, as shown in Fig. 5(a); the adjacent training time domain units can also have a certain interval in time, as shown in Fig. 5(b).
  • T the transmission period of the beam
  • N N*t should be used to ensure that there is enough time in each transmission period to send the beam training signals in each direction supported by the base station once
  • t denotes a training time domain unit, and a beam training signal corresponding to the direction is transmitted in the training time domain unit.
  • the frequency domain resource of the beam training signal is fixed, for example, it can be: the middle position of the bandwidth, and the size is equal to the minimum bandwidth supported by the high frequency communication protocol.
  • the specific processing procedure by which the base station determines the number of beams to be transmitted is not of interest to the present invention.
  • the terminal For the receiving end, that is, the terminal, before receiving the beam training signal, the terminal performs downlink synchronization, completes time domain and frequency domain synchronization, and obtains radio frame timing; then performs correlation peak detection on N training time domain units respectively to find out Receiving one beam with the best performance as the selected beam, and then feeding back the indication information of the selected beam to the base station;
  • the terminal may find the beam index corresponding to the time domain location of the selected beam according to the obtained correspondence between the time domain location and the beam index, and The found beam index is fed back to the base station.
  • the terminal detects that the selected beam is located between and the distance t c , and according to the correspondence between the learned time domain position and the beam index, The corresponding beam index is 2, and the terminal feeds back the beam index 2 to the base station. After the base station correctly receives the feedback from the terminal, the downlink transmission beam optimal for the terminal is obtained.
  • the terminal needs to feed back information that can identify the beam index, for example, feedback the index number of the training time domain unit corresponding to the selected beam, or feedback the training corresponding to the selected beam.
  • the OFDM Orthogonal Frequency Division Multiplexing (OFDM) symbol number, the micro-frame number, the subframe number, or the slot number, etc.; correspondingly, after receiving the feedback from the terminal, the base station Feedback
  • the content finds the time domain location corresponding to the selected beam, and further finds the corresponding beam index according to the time domain location, so that the base station obtains the downlink transmission beam optimal for the terminal.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the base station sends the beam training signal in different time domain positions, and the terminal feeds back to the base station the indication information that can identify the time domain position corresponding to the selected beam, thereby The base station can learn the optimal downlink transmission beam corresponding to the terminal. Therefore, the beam identification method in this embodiment can be considered as a time division method.
  • each beam is periodically transmitted, but the transmission period corresponding to each beam is different, that is, there are N different transmission periods, corresponding to N beams, respectively.
  • the transmission periods are respectively recorded as ⁇ i.
  • Each training time domain unit is divided into N different transmission periods, and each training unit corresponds to one index number.
  • the transmission period of each beam may also be referred to as the time interval for transmitting the beam, and there are N different time intervals.
  • the adjacent training time domain units may be continuous in time or may have a certain interval in time.
  • a beam training signal corresponding to the direction is transmitted in the training time domain unit.
  • the frequency domain resources (including size and position) of the beam training signal are fixed, for example, may be: the middle position of the bandwidth, and the size is equal to the minimum bandwidth supported by the high frequency communication protocol;
  • the base station For the transmitting end, that is, the base station, before transmitting the beam training signal, the base station first determines the number of beams to be transmitted, and the number of branches is set to one, ⁇ ⁇ , selecting one transmission period from one transmission period, one beam corresponding to one transmission period , each beam corresponds to a different transmission period, respectively Then, the beam training signal is sent according to the corresponding transmission period on the corresponding training time domain unit of each transmission period, and each training time domain unit transmits one beam.
  • the periods corresponding to beam 0 to beam 9 in Figure 6 are respectively ⁇ . ⁇ 9 ,
  • the number on the training time domain unit in Figure 6 represents the beam index, and the beam index corresponds to the first to the tenth training time domain units, respectively.
  • the specific processing procedure by which the base station determines the number of beams to be transmitted is not of interest to the present invention.
  • the terminal can perform the beam training process before the downlink synchronization process, and the beam training process and the downlink synchronization process can also be performed simultaneously.
  • the terminal performs correlation peak detection on the beam training signal. After detecting two correlation peaks, it is determined whether the time difference between the received two correlation peaks is equal to a predefined beam transmission period, that is, whether it is equal to ⁇ . If one is not equal to one, it means that the detection result is incorrect, and the detection is re-detected. If it is equal to, the detection result is correct. Taking FIG. 6 as an example, the terminal determines whether the time difference between the two correlation peaks received is equal to ⁇ .
  • One of ⁇ 9 if equal to one of them, considers the test result to be correct. If the detection result is correct, the terminal uses the beam whose current detection result is correct as the selected beam, and feeds back the indication information of the selected beam to the base station.
  • the terminal may find the beam index corresponding to the time difference between the two correlation peaks according to the relationship between the learned transmission period and the beam index, and find the beam index.
  • the incoming beam index is fed back to the base station. For example, as shown in FIG. 6, it is assumed that the time difference between two correlation peaks is equal to ⁇ 3 , according to the relationship between the known transmission period and the beam index, it can be known that the corresponding beam index is 3, and the terminal will beam.
  • the index 3 can be fed back to the base station. After the base station correctly receives the feedback from the terminal, the downlink transmission beam optimal for the terminal is obtained.
  • the terminal needs to feed back information that can identify the beam index, for example, feedback other parameters that can represent the magnitude of the time difference between the two correlation peaks, specifically, feedback the time difference between the two correlation peaks. Or the index number of the transmission period, etc.; correspondingly, after receiving the feedback from the terminal, the base station finds the corresponding beam according to the feedback content. The index, in this way, the base station obtains the downlink transmission beam optimal for the terminal.
  • the base station sends a beam training signal on different transmission periods, and the terminal feeds back, to the base station, indication information that can identify the transmission period corresponding to the time difference between the two correlation peaks, thereby The base station can learn the optimal downlink transmission beam corresponding to the terminal. Therefore, the beam identification method in this embodiment can be regarded as a beam identification method in the time domain differential mode.
  • each beam training signal is sent twice in one training period, and different beams are twice in the same training period.
  • the corresponding time domain interval is different for sending; that is, 2N training time domain units need to be divided in one training period, two are a group, a total of N groups, each beam corresponds to one group, and two trainings in each group
  • the time domain interval of the time domain unit is different from other groups, that is, each beam corresponds to one time domain interval, and there are N different time domain intervals, and N time domain intervals are respectively recorded as ⁇ .
  • the time domain interval between different beams is not equal to the time domain interval corresponding to any one beam; for example, assume that there are two beams of the first beam and the second beam, For the first beam, the time interval of the two transmit beam training signals is 5 ms. For the second beam, the time interval of the two transmit beam training signals is 10 ms. To avoid false detection, it is necessary to ensure that the first beam and the first beam are transmitted. The time interval of the two beams is not equal to 5ms and 10ms. As shown in FIG.
  • T is a training period, and there are twenty training time domain units in each period, and the training time domain units with the same box shading in FIG. 7 are a group, first.
  • the time domain intervals corresponding to the two training time domain units in the group to the tenth group are respectively t ⁇ t 9 .
  • the adjacent training time domain units may be continuous in time or may have a certain interval in time.
  • a beam training signal corresponding to the direction is transmitted in the training time domain unit.
  • the frequency domain resources (including size and position) of the beam training signal are pre-configured, for example: Configuring the beam training signal, the frequency domain resource is the middle position of the bandwidth, and the size is equal to the high frequency communication protocol.
  • Configuring the beam training signal the frequency domain resource is the middle position of the bandwidth, and the size is equal to the high frequency communication protocol.
  • the minimum bandwidth supported by the conference the
  • the base station For the transmitting end, that is, the base station, before transmitting the beam training signal, the base station first determines the number of beams to be transmitted, and if there are M, it has MN, and then selects M training time domain units in the N training time domain unit, and each The group training time domain unit corresponds to one beam, and the corresponding beam training signal is respectively sent on the corresponding training time domain unit; wherein each training time domain unit sends a beam training signal, so that each beam is in one training period The corresponding time domain interval is different in size.
  • the numbers on the training time domain unit in Figure 7 represent the beam index, and each set of training time domain units corresponds to one beam.
  • the specific processing procedure by which the base station determines the number of beams to be transmitted is not of interest to the present invention.
  • the terminal can perform the beam training process before the downlink synchronization process, and the beam training process and the downlink synchronization process can also be performed simultaneously.
  • the terminal performs correlation peak detection on the beam training signal. After detecting two correlation peaks, it is determined whether the time difference between the received two correlation peaks is equal to a predefined time domain interval, that is, whether it is equal to ⁇ . If one is not equal to one, it means that the detection result is incorrect, and the detection is re-detected. If it is equal to, the detection result is correct. Taking FIG. 7 as an example, the terminal determines whether the time difference between the two received peaks is equal to ⁇ . ⁇ a. 9 ⁇ , if not equal described detection result is incorrect, re-testing, if it is equal, instructions for proper detection result, the terminal the information indicating the current correct the detection result of the beam as the beam selected, the selected beam to the base station .
  • the terminal may find the beam index corresponding to the time difference between the received two correlation peaks according to the correspondence between the learned time domain interval and the beam index, and The found beam index is fed back to the base station. For example, as shown in FIG. 7, if it is assumed that the time difference between two correlation peaks is equal to ⁇ 3 , according to the correspondence between the learned time domain interval and the beam index, it can be known that the corresponding beam index is 3, and the terminal will The beam index 3 is fed back to the base station. After the base station correctly receives the feedback from the terminal, the downlink transmission beam optimal for the terminal is obtained.
  • the terminal needs to feed back information that can identify the beam index, for example: feedback other parameters that can represent the magnitude of the time difference between the two correlation peaks, specifically, feedback corresponding two correlations The peak time difference or the time domain interval index number, etc.; correspondingly, after receiving the feedback from the terminal, the base station finds a corresponding beam index according to the feedback content, so that the base station obtains the downlink transmission beam optimal for the terminal.
  • the base station sends a beam training signal at different time interval intervals, and the terminal feeds back information indicating that the time difference corresponding to the time difference between the two correlation peaks is detected by the terminal to the base station. Therefore, the base station can learn the optimal downlink transmission beam corresponding to the terminal. Therefore, the beam identification method in this embodiment can be regarded as a beam identification method in the time domain differential mode.
  • the number of beams supported by the base station is N
  • N training frequency domain units are allocated on the frequency domain resource
  • one training frequency domain unit can only send one beam training signal
  • the N training frequency domains Units occupy the same time domain resources and are sent periodically on the time domain.
  • ten training frequency domain units are divided on the frequency domain resource, and correspondingly transmitted on the training frequency domain unit.
  • the adjacent training frequency domain unit can be continuous in the frequency domain.
  • the adjacent training frequency domain unit can also have a certain frequency domain interval, as shown in Fig. 8(b).
  • the base station For the transmitting end, that is, the base station, before transmitting the beam training signal, the base station first determines the number of beams to be transmitted, and if there are M, it has MN, and then finds the time-frequency position of the N training frequency domain units according to the pre-configured information. And selecting M training frequency domain units, and sequentially transmitting beam training signals on the M training frequency domain units; wherein, when transmitting the beam training signals, each training frequency domain unit sends a beam training signal.
  • the specific processing procedure by which the base station determines the number of beams to be transmitted is not of interest to the present invention.
  • the terminal For the receiving end, that is, the terminal, the terminal respectively trains the beam training signal on the N training frequency domain units. Perform correlation peak detection to find a beam with the best receiving performance as the selected beam, and feed back the indication information of the selected beam to the base station;
  • the terminal may find the beam index corresponding to the frequency domain location of the selected beam according to the obtained correspondence between the frequency domain location and the beam index, and The found beam index is fed back to the base station.
  • the terminal detects that the selected beam is located between / ⁇ and / c , according to the correspondence between the learned frequency domain position and the beam index. It can be known that the corresponding beam index is 4, and the terminal can feed back the beam index 4 to the base station. After the base station correctly receives the feedback from the terminal, the downlink transmission beam optimal for the terminal is obtained.
  • the terminal needs to feed back information that can identify the beam index, for example, feedback the index number of the training frequency domain unit corresponding to the selected beam, or feedback the training corresponding to the selected beam.
  • the base station after receiving the feedback of the terminal, finds the frequency domain location corresponding to the selected beam according to the feedback content, and further finds the corresponding beam index according to the frequency domain location, so that The base station obtains an optimal downlink transmit beam for the terminal.
  • the base station sends a beam training signal in different frequency domain locations, and the terminal feeds back information indicating the frequency domain location corresponding to the selected beam to the base station, thereby The base station can learn the optimal downlink transmission beam corresponding to the terminal. Therefore, the beam identification method in this embodiment can be regarded as a frequency division method.
  • the number of beams supported by the base station is N
  • 2N training frequency domain units are allocated on the frequency domain resources
  • the 2N training frequency domain units occupy the same time domain resource, and in the time domain.
  • Periodic transmission dividing 2N training frequency domain units into N groups, each group has two training frequency domain units, one set of training frequency domain units corresponding to one beam, and two training frequency domain unit pairs in each group
  • the frequency domain interval is different from other groups, that is, each beam corresponds to one frequency domain interval, and there are N different frequency domain intervals.
  • the frequency domain intervals corresponding to the N groups of training frequency domain units are respectively recorded as /. ⁇ / ⁇ .
  • twenty (ten groups) training frequency domain units are divided in the frequency domain
  • two training frequency domain units with the same box shading in Fig. 9 are grouped.
  • the specific processing procedure by which the base station determines the number of beams to be transmitted is not of interest to the present invention.
  • the terminal For the receiving end, that is, the terminal, the terminal performs correlation peak detection on the beam training signals of the N groups of training frequency domain units, finds the best receiving performance group, and then feeds the detection result back to the base station.
  • the terminal may find the frequency domain interval of the selected set of training frequency domain units according to the obtained correspondence between the frequency domain interval and the beam index.
  • the beam index is indexed, and the found beam index is fed back to the base station.
  • the frequency domain interval of the selected selected one of the training frequency domain units is equal to / 3 , and according to the correspondence between the obtained frequency domain position and the beam index, the corresponding correspondence can be known.
  • the beam index is 3, and the terminal feeds back the beam index 3 to the base station. After the base station correctly receives the feedback from the terminal, the downlink transmission beam optimal for the terminal is obtained.
  • the terminal needs to feed back information that can identify the beam index, such as: feedbacking the frequency domain interval of a selected set of training frequency domain units, or feeding back a selected set of training frequencies.
  • the base station finds a beam index corresponding to the selected set of training frequency domain units according to the feedback content, so that the base station obtains the terminal for the terminal.
  • Optimal downlink transmit beam As can be seen from the above description, in the beam identification method provided by the embodiment, the base station sends the beam training signal in different frequency domain intervals, and the terminal feeds back to the base station to identify the frequency domain interval corresponding to the selected set of training frequency domain units.
  • the number of beams supported by the base station is N, and the beam training is performed periodically, and each beam uses the same period.
  • J training time domain units are divided, and the frequency domain resources are allocated.
  • the adjacent beam training units in a period may be continuous in the time domain and the frequency domain, or may have a certain time domain or frequency domain interval.
  • the base station For the transmitting end, that is, the base station, before transmitting the beam training signal, the base station first determines the number of beams to be transmitted, and if there are M, it has MN, and then selects M beam training units from the I*J beam training units, one A beam training signal in one direction is transmitted on the training frequency domain unit.
  • each beam training unit corresponds to one beam
  • the number on the beam training unit in Figure 10 represents the beam index.
  • the specific processing procedure by which the base station determines the number of beams to be transmitted is not of interest to the present invention.
  • the terminal For the receiving end, that is, the terminal, the terminal performs correlation peak detection on the beam training signal on the N beam training units, finds a beam with the best receiving performance, uses the beam as the selected beam, and then indicates the selected beam. Feedback to the base station; wherein the optimal beam can be uniquely determined according to the location of the time domain and the location of the frequency domain.
  • the terminal may find the time-frequency of the selected beam according to the correspondence between the time-frequency position and the beam index of the learned beam training unit.
  • the beam index corresponding to the location and will find The incoming beam index is fed back to the base station.
  • the terminal detects that the selected beam is located between /b and in the frequency domain, and lies between i and c in the time domain, according to the time-frequency of the learned beam training unit.
  • the corresponding beam index is 3, and the terminal can feed the beam index 3 to the base station.
  • the downlink transmission is optimal for the terminal. Beam.
  • the terminal needs to feed back information that can identify the beam index, for example, feedback the beam training unit number corresponding to the selected beam, or feedback corresponding beam selection.
  • the base station finds the beam index corresponding to the selected beam according to the feedback content, so that the base station obtains the optimal downlink transmission for the terminal. Beam.
  • the base station sends a beam training signal at different time-frequency positions, and the terminal feeds back, to the base station, indication information that can identify the time-frequency position corresponding to the selected beam, thereby The base station can learn the optimal downlink transmission beam corresponding to the terminal. Therefore, the beam identification method in this embodiment can be regarded as a time division + frequency division method.
  • the number of beams supported by the base station is N, and the period is beam training.
  • 2J training time domain units are divided in the time domain, and one training frequency domain unit is divided in the frequency domain.
  • 2J*I beam training units are divided into I*J groups, each group of two beam training units, and a total of I*J beam training unit groups; having the same training frequency domain
  • the time domain interval of two beam training units in each group of beam training units of the unit is different from the time domain interval of two beam training units in other groups.
  • there are J different time domain intervals, and the time domain interval sizes are respectively recorded. Is ⁇ .
  • the adjacent beam training units in a period may be continuous in the time domain and the frequency domain, or may have a certain time domain or frequency domain interval.
  • the specific processing procedure by which the base station determines the number of beams to be transmitted is not of interest to the present invention.
  • the terminal can perform the beam training process before the downlink synchronization, and the beam training process and the downlink synchronization process can also be performed simultaneously.
  • the terminal performs correlation peak detection on the beam training signals on the two training frequency domain units respectively. After detecting two correlation peaks, it is determined whether the time difference between the received two correlation peaks is equal to a predefined time domain interval, that is, whether it is equal to ⁇ 0. If one is not equal to one, it means that the detection result is incorrect, and the detection is re-detected. If it is equal to, the detection result is correct. . Taking Figure 8 as an example, the terminal determines whether the time difference between the two correlation peaks received is equal to ⁇ .
  • One of ⁇ 4 if not equal, indicates that the detection result is incorrect, re-detect, if equal, the detection result is correct.
  • the terminal uses the beam whose current detection result is correct as the selected beam, and feeds back the indication information of the selected beam to the base station.
  • the terminal may search according to the corresponding relationship between the frequency domain location and the time domain interval of the beam training unit and the beam index.
  • the beam index corresponding to the time difference of the two correlation peaks is received on the two training frequency domain units, and the found beam index is fed back to the base station.
  • the two correlation peaks detected by the terminal are located between /b and in the frequency domain, and the time domain interval is equal to, according to the frequency domain position of the learned beam training unit.
  • Corresponding relationship between the time domain interval and the beam index it can be known that the corresponding beam index is 7, and the terminal can feed the beam index 7 to the base station. After the base station correctly receives the feedback from the terminal, it obtains the corresponding information.
  • the downlink transmit beam that is optimal for the terminal.
  • the terminal needs to feed back information that can identify the beam index, for example, feedback the frequency domain location and time domain where the corresponding beam training unit is located.
  • the base station After receiving the feedback from the terminal, the base station finds a corresponding beam index according to the feedback content, so that the base station obtains a downlink transmission beam optimal for the terminal.
  • the base station sends a beam training signal on the time domain interval in different frequency domain locations, and the terminal feeds back information indicating the time-frequency position corresponding to the selected beam to the base station. Therefore, the base station can learn the optimal downlink transmission beam corresponding to the terminal. Therefore, the beam identification method in this embodiment can be considered as a frequency division + time domain differential method.
  • the base station in the MIMO beamforming communication system provided by the embodiment of the present invention includes: a first sending unit 121, a receiving unit 122, and a first determining unit 123; wherein, the first sending unit 121 is configured to Sending a plurality of beam training signals to the terminal; each beam training signal corresponds to one beam, and each beam covers a different direction;
  • the first receiving unit 122 is configured to receive indication information of the selected beam fed back by the terminal;
  • the first determining unit 123 is configured to determine, according to the feedback information of the selected selected beam, a beam configured to transmit data information.
  • the beam training signal refers to: a signal carrying a beam, and may also have other names, such as: a beam test signal, etc., as long as the signal that achieves the same purpose as the beam training signal in the present application is within the scope of the protection idea of the patent.
  • the sending the multiple beam training signals includes:
  • each beam corresponds to a time domain location
  • each beam corresponds to one frequency domain location
  • each beam corresponds to one time domain interval
  • Multiple beam training signals are transmitted in different frequency domain intervals; each beam corresponds to one frequency domain interval.
  • the sending the multiple beam training signals in different time domain intervals includes: periodically transmitting multiple beam training signals; each beam training signal corresponds to one transmission period; or
  • the beam training signal corresponding to each beam is transmitted twice in one training period, and the time interval between two transmitted beam training signals is different; the time domain intervals corresponding to different beams are different.
  • the time domain interval between different beams is not equal to the training period and the time domain interval corresponding to any beam.
  • the number of beams corresponding to the transmitted beam training signal is less than or equal to the maximum number of beams supported by the base station; correspondingly, the number of time domain positions used for transmitting the beam training signal is less than or equal to the maximum number of beams supported by the base station;
  • the number of frequency domain positions of the transmit beam training signal is less than or equal to the maximum number of beams supported by the base station;
  • the number of time domain intervals used for transmitting the beam training signal is less than or equal to the maximum number of beams supported by the base station;
  • the number of frequency domain intervals of the beam training signal is less than or equal to the maximum number of beams supported by the base station.
  • the indication information of the selected beam may be: a beam index corresponding to the selected beam or information that can identify a beam index corresponding to the selected beam; where the information indicating the beam index corresponding to the selected beam includes: At least one of a domain location index, a frequency domain location index, a time domain interval index, and a frequency domain interval index.
  • the information of the beam index corresponding to the selected beam is identified as a time domain location index; when multiple beam training signals are transmitted by using the frequency division method, the selection can be identified.
  • the information of the beam index corresponding to the beam is the frequency domain location index; when multiple beam training signals are transmitted in the time domain differential mode, the information of the beam index corresponding to the selected beam is identified as the time domain interval index; When the multiple beam training signals are sent in the differential mode, the information of the beam index corresponding to the selected beam is the frequency domain interval index. When multiple beam training signals are transmitted in the time division mode and the frequency division mode, the selected beam corresponding to the beam can be identified.
  • the information of the beam index is the time domain location index and the frequency domain location index, and so on.
  • the determining the beam for transmitting the data information according to the information of the selected beam of the feedback specifically includes:
  • the beam for transmitting the data information is determined according to the stored information of the beam index corresponding to the selected beam and the corresponding relationship of the beam index.
  • the selected beam may be a beam with the best receiving performance, etc.
  • which beam is the beam with the best receiving performance
  • the specific processing process for determining which beam is the beam with the best receiving performance is the field. The technical personnel are accustomed to technical means and will not be described again.
  • the first transmitting unit and the receiving unit may be implemented by a transceiver of the base station, and the first determining unit may be a central processing unit (CPU) of the base station, and a digital signal processor (DSP). Or programmable logic array (FPGA, Field - Programmable Gate Array ) implementation.
  • CPU central processing unit
  • DSP digital signal processor
  • FPGA programmable logic array
  • the terminal in the MIMO beamforming communication system provided by the embodiment of the present invention includes: a detecting unit 131, a second determining unit 132, and a second sending unit 133; wherein, the detecting unit 131 is configured to detect a beam Training signal
  • the second determining unit 132 is configured to determine the selected beam according to the detection result of the beam training signal
  • the second sending unit 133 is configured to feed back indication information of the selected beam to the base station.
  • the beam training signal refers to: a signal carrying a beam, and may also have other names, such as: a beam test signal, etc., as long as the signal that achieves the same purpose as the beam training signal in the present application is within the scope of the protection idea of the patent.
  • the terminal has previously known which way to determine the beam with the best reception performance.
  • the indication information of the selected beam may be: a beam index corresponding to the selected beam or information that can identify a beam index corresponding to the selected beam; where the information indicating the beam index corresponding to the selected beam includes: At least one of a domain location index, a frequency domain location index, a time domain interval index, and a frequency domain interval index.
  • the selected beam may be a beam with the best receiving performance, etc.
  • which beam is the beam with the best receiving performance
  • the specific processing process for determining which beam is the beam with the best receiving performance is the field. The technical personnel are accustomed to technical means and will not be described again.
  • the detecting unit and the second transmitting unit may be implemented by a transceiver of the terminal, and the second determining unit may be implemented by a CPU, a DSP or an FPGA of the terminal.
  • the beam identification system in the MIMO beamforming communication system provided by the embodiment of the present invention includes: a base station 141 and a terminal 142;
  • the base station 141 is configured to send multiple beam training signals to the terminal 142; each beam training signal corresponds to one beam, each beam covers a different direction; and is selected according to the feedback of the terminal 142.
  • Indicator information of the beam determining a beam for transmitting data information;
  • the terminal 142 is configured to detect a beam training signal; determine the selected beam according to the detection result of the beam training signal, and feed back the indication information of the selected beam to the base station 141.
  • the first sending unit of the base station 141 sends a plurality of beam training signals to the terminal 142; each beam training signal corresponds to one beam, and each beam covers a different direction; the detecting unit of the terminal 142 detects the beam training signal, and the terminal 142 The second determining unit determines the selected beam according to the detection result of the beam training signal, and then the second transmitting unit of the terminal 142 feeds back the indication information of the selected beam to the base station 141; the first receiving unit of the base station 141 receives the feedback from the terminal 142.
  • the indication information of the selected beam; and the first determining unit of the base station 141 determines the beam for transmitting the data information according to the feedback indication information of the selected beam.
  • the beam training signal refers to: a signal carrying a beam, and may also have other names, such as: a beam test signal, etc., as long as the signal that achieves the same purpose as the beam training signal in the present application is within the scope of the protection idea of the patent.
  • the sending the multiple beam training signals includes:
  • the base station 141 transmits a plurality of beam training signals by using at least one of a time division method, a frequency division method, a time domain difference method, and a frequency domain difference method;
  • the base station 141 transmits multiple beam training signals in different time domain locations; each beam corresponds to a time domain location;
  • the base station 141 transmits multiple beam training signals at different frequency domain locations; each beam corresponds to one frequency domain location;
  • the base station 141 transmits multiple beam training signals in different time domain intervals; each beam corresponds to one time domain interval; The plurality of beam training signals are transmitted in the frequency domain differential manner, where the base station 141 sends multiple beam training signals in different frequency domain intervals; each beam corresponds to one frequency domain interval.
  • each of the beam training signals corresponds to one transmission period
  • the beam training signal corresponding to each beam is transmitted twice in one training period, and the time interval between two transmitted beam training signals is different; the time domain intervals corresponding to different beams are different.
  • the time domain interval between different beams is not equal to the training period and the time domain interval corresponding to any beam, so that the false detection of the terminal 142 can be effectively avoided.
  • the number of beams corresponding to the beam training signal sent by the base station 141 is less than or equal to the maximum number of beams supported by the base station 141; correspondingly, the number of time domain positions used for transmitting the beam training signal is less than or equal to the maximum beam supported by the base station 141.
  • the number of frequency domain positions used for transmitting the beam training signal is less than or equal to the maximum number of beams supported by the base station 141; the number of time domain intervals used for transmitting the beam training signal is less than or equal to the maximum beam supported by the base station 141.
  • the number of frequency domain intervals used to transmit the beam training signal is less than or equal to the maximum number of beams supported by the base station 141.
  • the base station 141 transmits the beam training signal.
  • the determining the selected beam according to the detection result of the beam training signal includes:
  • the terminal 142 has previously learned which way the base station transmits the beam training signal, and further knows which one should be used.
  • the mode determines the selected beam.
  • the indication information of the selected beam may be: a beam index corresponding to the selected beam or information that can identify a beam index corresponding to the selected beam; where the information indicating the beam index corresponding to the selected beam includes: Domain location index, frequency domain location index, time domain interval At least one of an index, a frequency domain interval index.
  • the determining the beam for transmitting the data information according to the information of the selected beam of the feedback specifically includes:
  • the base station 141 determines a beam for transmitting data information according to the stored information of the beam index corresponding to the selected beam and the correspondence of the beam index.
  • the selected beam may be a beam with the best receiving performance, etc.
  • which beam is the beam with the best receiving performance
  • the specific processing process for determining which beam is the beam with the best receiving performance is the field. The technical personnel are accustomed to technical means and will not be described again.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of a hardware embodiment, a software embodiment, or an embodiment of a combination of software and hardware. Moreover, the invention can be embodied in the form of a computer program product embodied on one or more computer usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the device is implemented in a flow chart A function specified in a block or blocks of a process or multiple processes and/or block diagrams.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

L'invention concerne un procédé d'identification de faisceau dans un système de communications MIMO à formation de faisceau. Le procédé comprend les étapes suivantes : une station de base envoie une pluralité de signaux de conditionnement de faisceau à un terminal, chaque signal de conditionnement de faisceau correspondant à un faisceau, et chaque faisceau couvrant une direction différente ; le terminal détecte les signaux de conditionnement de faisceau, détermine un faisceau sélectionné d'après un résultat de la détection et retourne des information indiquant le faisceau sélectionné à la station de base ; d'après les informations indiquant au faisceau sélectionné retournées par le terminal, la station de base détermine un faisceau utilisé pour envoyer des informations de données. L'invention concerne également un dispositif et un système d'identification de faisceau correspondants dans un système de communications MIMO à formation de faisceau.
PCT/CN2014/078040 2013-12-20 2014-05-21 Procédé d'identification de faisceau, et dispositif et système correspondants dans un système de communications mimo à formation de faisceau WO2014187322A1 (fr)

Priority Applications (1)

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US15/106,453 US9906284B2 (en) 2013-12-20 2014-05-21 Beam identification method, related device and system in MIMO beamforming communication system

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CN201310714138.3 2013-12-20
CN201310714138.3A CN104734759B (zh) 2013-12-20 2013-12-20 Mimo波束赋形通信系统中波束识别方法、相关设备及系统

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WO2018056880A1 (fr) * 2016-09-26 2018-03-29 Telefonaktiebolaget Lm Ericsson (Publ) Optimisation du temps de réception en rapport avec l'identification dans un système de communication sans fil
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WO2018112849A1 (fr) * 2016-12-22 2018-06-28 广东欧珀移动通信有限公司 Procédé et dispositif d'émission de données en vue d'une réception discontinue

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WO2016065644A1 (fr) * 2014-10-31 2016-05-06 华为技术有限公司 Procédé de réglage de faisceaux, équipement utilisateur et station de base
WO2016163490A1 (fr) * 2015-04-10 2016-10-13 京セラ株式会社 Système de communication mobile, station de base et terminal utilisateur
EP3316493A4 (fr) 2015-07-31 2018-07-11 Huawei Technologies Co., Ltd. Procédé, appareil, et système de transmission de faisceaux d'apprentissage
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